// NewCameraDriver creates a new driver with specified name and source.
// It also creates a start function to either set camera as a File or Camera capture.
func NewCameraDriver(name string, source interface{}, v ...time.Duration) *CameraDriver {
c := &CameraDriver{
name: name,
Eventer: gobot.NewEventer(),
Source: source,
interval: 10 * time.Millisecond,
start: func(c *CameraDriver) (err error) {
switch v := c.Source.(type) {
case string:
c.camera = cv.NewFileCapture(v)
case int:
c.camera = cv.NewCameraCapture(v)
default:
return errors.New("Unknown camera source")
}
return
},
}
if len(v) > 0 {
c.interval = v[0]
}
c.AddEvent(Frame)
return c
}
func main() {
flag.Parse()
if *user == "" {
log.Fatal("Need gmail user name.")
}
if *password == "" {
log.Fatal("Need gmail user password.")
}
time.Sleep(*initialSleep)
cap := opencv.NewCameraCapture(0)
if cap == nil {
log.Fatal("Can't open camera.")
}
defer cap.Release()
det := detector.New(&detector.Params{
DevThreshold: *minDev,
PhaseThreshold: 3,
QueryFrame: cap.QueryFrame,
})
defer det.Close()
log.Println("Watching for motion")
for {
if im := det.Detect(); im != nil {
detectedMotion(im)
}
time.Sleep(*interval)
}
}
func main() {
var edge_threshold int
win := opencv.NewWindow("Go-OpenCV Webcam")
defer win.Destroy()
cap := opencv.NewCameraCapture(0)
if cap == nil {
panic("can not open camera")
}
defer cap.Release()
win.CreateTrackbar("Thresh", 1, 100, func(pos int, param ...interface{}) {
edge_threshold = pos
})
fmt.Println("Press ESC to quit")
for {
if cap.GrabFrame() {
img := cap.RetrieveFrame(1)
if img != nil {
ProcessImage(img, win, edge_threshold)
} else {
fmt.Println("Image ins nil")
}
}
key := opencv.WaitKey(10)
if key == 27 {
os.Exit(0)
}
}
}
func main() {
cap := opencv.NewCameraCapture(0)
if cap == nil {
panic("can not open camera")
}
defer cap.Release()
_, currentfile, _, _ := runtime.Caller(0)
cascade := opencv.LoadHaarClassifierCascade(path.Join(path.Dir(currentfile), "haarcascade_frontalface_alt.xml"))
timeout := time.Second * 10
lastFace := time.Now()
for {
if cap.GrabFrame() {
img := cap.RetrieveFrame(1)
if img == nil {
continue
}
hasFaces, _ := ProcessImage(img, cascade)
if hasFaces {
lastFace = time.Now()
} else {
delta := time.Since(lastFace)
fmt.Println("no faces for %ts", delta)
if delta > timeout {
fmt.Println("lock!")
lock()
time.Sleep(time.Second * 60)
}
}
}
time.Sleep(time.Second)
}
}
func main() {
hd, err := filepath.Abs(filepath.Dir(os.Args[0]))
if err != nil {
panic(err)
}
cp := path.Join(hd, "haarcascade_frontalface_alt.xml")
if _, err := os.Stat(cp); err != nil {
panic(err)
}
cm := opencv.NewCameraCapture(0)
cs := opencv.LoadHaarClassifierCascade(cp)
p := &pair.Checker{Camera: cm, Cascade: cs}
t, err := p.Present()
if err != nil {
panic(err)
}
if !t {
os.Stderr.WriteString("Your pair must be playing ping pong\n")
os.Exit(1)
}
}
func init() {
//Initialize camera
fmt.Println("Get capture")
Capture <- opencv.NewCameraCapture(0)
fmt.Println("Capture done")
// Filters is the default set of global filters.
revel.Filters = []revel.Filter{
revel.PanicFilter, // Recover from panics and display an error page instead.
revel.RouterFilter, // Use the routing table to select the right Action
revel.FilterConfiguringFilter, // A hook for adding or removing per-Action filters.
revel.ParamsFilter, // Parse parameters into Controller.Params.
revel.SessionFilter, // Restore and write the session cookie.
revel.FlashFilter, // Restore and write the flash cookie.
revel.ValidationFilter, // Restore kept validation errors and save new ones from cookie.
revel.I18nFilter, // Resolve the requested language
HeaderFilter, // Add some security based headers
revel.InterceptorFilter, // Run interceptors around the action.
revel.CompressFilter, // Compress the result.
revel.ActionInvoker, // Invoke the action.
}
// register startup functions with OnAppStart
// ( order dependent )
// revel.OnAppStart(InitDB)
// revel.OnAppStart(FillCache)
}
func NewCam(index int) (Camera, error) {
src := opencv.NewCameraCapture(index)
cam := Camera{src, index}
if src == nil {
return cam, NewCamError("It is nil!")
}
go func() {
defer src.Release()
for {
}
}()
return cam, nil
}
func NewVideoCapture(videoFilePath string) VideoCapture {
var camMode = false
if videoFilePath == "" {
camMode = true
}
var cap *opencv.Capture
if videoFilePath == "" {
cap = opencv.NewCameraCapture(0)
} else {
cap = opencv.NewFileCapture(videoFilePath)
}
var size = opencv.Size{int(cap.GetProperty(opencv.CV_CAP_PROP_FRAME_WIDTH)), int(cap.GetProperty(opencv.CV_CAP_PROP_FRAME_HEIGHT))}
return VideoCapture{videoFilePath, camMode, cap, uint32(cap.GetProperty(opencv.CV_CAP_PROP_FOURCC)), float32(cap.GetProperty(opencv.CV_CAP_PROP_FPS)), size}
}
func CaptureFrames() {
var cam = opencv.NewCameraCapture(0)
defer cam.Release()
frames := []*opencv.IplImage{}
//var writter = opencv.NewVideoWriter("test.avi", int(opencv.FOURCC('D','I','V','3')),20, 50, 50, 1)
win := opencv.NewWindow("Go-OpenCV Webcam123")
defer win.Destroy()
for framesCounter := 0; framesCounter <= 25; framesCounter++ {
log.Print(framesCounter)
if cam.GrabFrame() || framesCounter > 25 {
// var frame = cam.RetrieveFrame(1)
// var img = ProcessImage(frame, 50)
// frames = append(frames, img)
var frame = cam.RetrieveFrame(1)
win.ShowImage(frame)
// var img3 = frame.ToImage()
var imageHeader = opencv.CreateImage(frame.Width(), frame.Height(), frame.Depth(), frame.Channels())
for i := 0; i < frame.Width(); i++ {
for j := 0; j < frame.Height(); j++ {
scalar := frame.Get2D(i, j)
var bgra = scalar.Val()
var newscalar = opencv.NewScalar(bgra[0], bgra[1], bgra[2], 1)
imageHeader.Set2D(i, j, newscalar)
}
}
// var img3Opencv = opencv.FromImage(img3)
var copy = opencv.CreateImage(frame.Width(), frame.Height(), frame.Depth(), frame.Channels())
opencv.Copy(frame, copy, nil)
// frames = append(frames, img3Opencv)
//win.ShowImage(imageHeader)
}
}
var videoWritter = NewVideoWriter(opencv.FOURCC('D', 'I', 'V', '3'), 20, opencv.Size{frames[0].Width(), frames[0].Height()})
videoWritter.SaveAsVideo(frames, "test.avi")
}
func main() {
win := opencv.NewWindow("Go-OpenCV Webcam Face Detection")
defer win.Destroy()
cap := opencv.NewCameraCapture(0)
if cap == nil {
panic("cannot open camera")
}
defer cap.Release()
cwd, err := os.Getwd()
if err != nil {
panic(err)
}
cascade := opencv.LoadHaarClassifierCascade(path.Join(cwd, "haarcascade_frontalface_alt.xml"))
fmt.Println("Press ESC to quit")
for {
if cap.GrabFrame() {
img := cap.RetrieveFrame(1)
if img != nil {
faces := cascade.DetectObjects(img)
for _, value := range faces {
opencv.Circle(img,
opencv.Point{
value.X() + (value.Width() / 2),
value.Y() + (value.Height() / 2),
},
value.Width()/2,
opencv.ScalarAll(255.0), 1, 1, 0)
}
win.ShowImage(img)
} else {
fmt.Println("nil image")
}
}
key := opencv.WaitKey(1)
if key == 27 {
os.Exit(0)
}
}
}
func main() {
cap := opencv.NewCameraCapture(0)
if cap == nil {
panic("cannot open camera")
}
defer cap.Release()
cwd, err := os.Getwd()
if err != nil {
panic(err)
}
cascade := opencv.LoadHaarClassifierCascade(path.Join(cwd, "haarcascade_frontalface_alt.xml"))
fmt.Println("Press ESC to quit")
for {
if cap.GrabFrame() {
img := cap.RetrieveFrame(1)
if img != nil {
faces := cascade.DetectObjects(img)
for _, value := range faces {
leftX := value.X()
rightX := leftX + value.Width()
lowY := value.Y()
highY := lowY + value.Height()
log.Println("Face Seen! LowLeft Corner: (", leftX, ", ", lowY, "), UpRight Corner: (", rightX, ", ", highY, ")")
}
} else {
fmt.Println("nil image")
}
}
key := opencv.WaitKey(1)
if key == 27 {
os.Exit(0)
}
}
}
func ProcessImageTest() {
log.Print("Try to open webcam.")
cap := opencv.NewCameraCapture(0)
if cap == nil {
panic("can not open camera")
}
log.Print("webcame opened.")
var outputFileName = "testvideo.mpeg"
var width = 640
var height = 480
var fps = 20.0
var fourcc = opencv.FOURCC('m', 'p', '4', 'v')
var noOfCapturedFrames = 100
cap.SetProperty(opencv.CV_CAP_PROP_FRAME_WIDTH, float64(width))
cap.SetProperty(opencv.CV_CAP_PROP_FRAME_HEIGHT, float64(height))
cap.SetProperty(opencv.CV_CAP_PROP_FPS, fps)
log.Print("capturing ", noOfCapturedFrames, " frames and save them to the following file: ", outputFileName)
log.Print("width: ", width)
log.Print("height: ", height)
log.Print("fps: ", fps)
log.Print("fourcc: ", fourcc)
var frames []*opencv.IplImage
for len(frames) < noOfCapturedFrames {
if cap.GrabFrame() {
img := cap.RetrieveFrame(1)
if img != nil {
var frame = cap.RetrieveFrame(1)
var copy = opencv.CreateImage(int(width), int(height), frame.Depth(), frame.Channels())
defer copy.Release()
opencv.Copy(frame, copy, nil)
frames = append(frames, copy)
} else {
fmt.Println("Image ins nil")
}
}
}
cap.Release()
win := opencv.NewWindow("Go-OpenCV Webcam")
defer win.Destroy()
for i := 0; i < len(frames); i++ {
log.Print("displaying frame no: ", i)
win.ShowImage(frames[i])
key := opencv.WaitKey(10)
if key != 0 {
log.Print(key)
}
}
log.Print("start writing frames to file.")
var videoWritter = NewVideoWriter(fourcc, float32(fps), opencv.Size{int(width), int(height)})
videoWritter.SaveAsVideo(frames, outputFileName)
log.Print("created file with name: ", outputFileName)
os.Exit(0)
}